- on cord features 2 fixed buttons, 2 programmable buttons, and a toggle wheel volume control. Users can answer and end phone calls simply by clicking call control buttons. Two buttons can be programmed from the computer to perform user-defined tasks such as “answer mobile phone call”, “speak mute” or to comply with commands in future softphones. Volume can be controlled directly from the toggle wheel.

- on cord features 2 fixed buttons, 2 programmable buttons, and a toggle wheel volume control. Users can answer and end phone calls simply by clicking call control buttons. Two buttons can be programmed from the computer to perform user-defined tasks such as “answer mobile phone call”, “speak mute” or to comply with commands in future softphones. Volume can be controlled directly from the toggle wheel.